H.R.3474: To expand the Safe Streets Program, to establish a National Gang Activity Database, and for other purposes.

National Safe Streets Gang Crime Prevention Act of 2007 - Authorizes the Attorney General to expand the Safe Streets Program of the Federal Bureau of Investigation (FBI) to support criminal street gang enforcement teams.

Directs the Attorney General to: (1) establish a National Gang Activity Database to disseminate information to law enforcement agencies about gang activities and gang members; and (2) provide funding to the Regional Information Sharing Systems to use RISSNET (secure intranet) to connect existing gang information systems with the National Gang Activity Database.